Check valve



July l0, 1928.

N. M.sMA| L.

CHECK VALVE Filed VSept G, 1927 mgl. fag/5 HZ@ l NormanMSmaZl.

amuse, T'Es -PATam orrice..

Patented .luly .v1-0, UNITEDA srTA NORMAN SMALL, OF WAYNSBORO, PENNSYLVANIA, .ASSIGNGR T FRICXQOMPANY,

0F WAYNESBOBO, PENNSYLVANIA, "A CORPORATION.

Acinici: vALvE. I lApplication filed September 6,1927. VSeri-a1 No. 217,748. y

wall o f the valve. An inner annular Harige is adapted to rest aiou'n-d'a shoulder 21 on the member 10. The flange 20 and -thewf l shoulder 21 secure the upper'` and lower' parts of the valve against .miss ilir,ie.ment.,v

Surrounding the` bores 16 u 'onthe upper face of the member 10 are ri ges or jfla'iiges 22 which provide seats for the valve orfri'ng plate 23. This'ring plate has integral 'there-v with a. ring or flange 24\whi'ch ring is adapt- 65 ed to abut against a depending ring orf flange within the member 1'1.` A coin ression spring 2 6 is positionedfjbtween tie vr-ing plate 23 andthe member 11. This spring is seated neatly within .thelange 25 atone end-and within the fla'nge 24 atthefother. The operation of the valve should be apparent fromv the .foregoing description. The ring plate 23 is normally seated to close the inlet assa'gesl being held in a.l closed 75l position y the sprin 26. This valve isopened by a pressure uid entering through 16 and permits the passage ofiuid only in The frings 25 .and 24 secure This invention relates to an improvement in check valves and it is an object of the 'invention to devise a ring plate valve in which the spring which seats the valve 4plate alsov guides the plate upon its seat. ln known valves of this general character it has been found necessaryto provide guides for the valve plate. These guides frequently became worn due to lack of lubrication and l high temperatures to'which they were subjected. lt is an object of this inventionrto provide a vvalve in which the spring which I seats the valve plate Will also act as a guide for the plate and ythus eliminatev the guide with the consequent troubles cause by wear.

A further Objectis t6' provide a valve having few parts. yet complete and ellicie'nt in operation.

Referring-to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts, i`

Figure 1 is a vertical 'sectional view show-r 2f ing the valve closed.

Figure 2 is a view similar to Figure 1 showing the valve in open position.

Figure 3 is a vertical 'section of a modiied'form of valve showing the valve in closed position, and

Figure 4; is a view similar to Figure 3- showingthe valve .in open position.

Inthe drawings numerals 10 and 11 indicate what may be termed the lowerl and upper sections of a separable valve, which parts may be held together by a bolt or screw 12 which passes through a borel 13 somewhat larger than the bolt 12 and #is screw-thr'eaded'into the member 10 at 14. If desired, a washer 15 maybe rovided4 between the head ofthe. bolt and t e member 11. j

While the members 10 and '11 have been otilie direction. f t e'com ress ion s ring 26 rom gettin out of positibn. As tliere is nothing withiig'i the 80 -valve upon which this spring'may catch the probabilit of its getting out of position is remote. he valve, therefore, does not re,- quire the attention necessary in most check 85 valves of this eneral type.

In the modiiied form shown in Figs. 3y

and 4 a series of bolts 32 are used to secure the valve members and 31 to ether. A depending flange 34 on the memer 31 fits within an upstanding flange 35 on ,the mem- 'y ber 30 and secures the members 30 .and 31 against radial displacement. -Tlie member 31 is rovidedwith ybores 36 and 37 which provi e outlets for the fluid passage throu h 95 the valve. The lower member 30 of t e valve has anv inlet passage 38. The ring., plate 39 has a flange 40 which has thereon i referred to as lower and upper members,-

it is of coursev understood that these terms' are used merely for the purpose oi descrip. tion' as the valve may be. used in any posi-.

tion.

A The lower member 10 is provided with bores 1'6 which provide inlet passages through the valve. The upper member 11 is rovided with bores 17 and 18 whichl rovi e the outlet passages to the valve. he upper member 11 is also provided with an annular flange 19V which provides the outer a'dependin edge 4 1 which'provides seating contact wit the valve seat 30.

lThe member 31 has a depending against which the 4ring plate 39 rests whenV the valve is in open position. compression spring 43 is confined betweenV the ring plate 39 and the member 31 andl rests at one 105 end neatly within the flange 42 and at the `other end in the flange 44 on the ring plate In both the formsy shown in Figs. 1 and 2 and that shown in Figs. 3 and 4 n. special un flange 42 100 ide for the 4sprin andthe ring late is ispense'd with and t e spring is'hel within the flanges 5 necessar -H "It w` be obviousto those -skilledixithg art thatl various changes ina vbe -miidefn um the spirit' device without de rtin mfv o lthe inventlon, an

.and described in? the cation .but Lili- ,asset forth inthe appendedclaims:l

v g aving thus fully described m 'said in# 'vention, whatI claim as ne'wl an desire to secure by Letters Patent, is: 1

'.detachable sections having lluid` 'p a flatportion foncooperation with said seat for clos' the assages through the valve,

" a.V ring or ho ding said ring plate upon` sp one'endconfined in av the lseat and havin channel in oneA oft e members ofthe valve -25 body and having its other end disposed 'in a The valves likewise are very simple. .totake apart when this 1 tion for c oein y y t elefoil'e, do not limit-myself-to'wh'at. isp own by the draw- ,its en located in said spring receiving re-v and adapted to be maintained in poluTlhe combination of upperlower,

therethrou h'and forming 'a valve .e body y a seatin' sai valve body, a ring plate having channel in the .ring plate whereby its motion will be guided and heldagainst'lateral 4movement entirel 1 by the. action'- of theV `spring, substantia y as set forthi4 2. valve body having lluid passages a0 therethrou h, a ring plate havin a flat porthe :passages t rough the valve body 4an having a portion disposed lat right angles thereto and formin an anf nular spring receiving recess, said va ve body as havinganannular depending portion form.

ing a second spring receiving recess, and a sprin corresponding in size to and having sition thereb the annulardependin rtion of the yvalve body whichforlspghe spring receiving recess also serving as a stop or'llmiting the openingmovementof the valve, substantially as set forth.

In `witness whereof,.I have hereunto set my hand at Waynesboro,' Pennsylvania this 3rd day of September',l A. D. nineteen hun- -dred and twentyseven.

NORMAN M. SMALL 

